<template>
    <div class="businessFormat">
        <canvas v-if="!formatPath" class="format" canvas-id="businessFormat" id="businessFormat"/>
        <image v-if="formatPath" class="format" :src="formatPath"></image>
    </div>
</template>

<script>
import uCharts from '@/components/u-charts.js';
var uChartsInstance = {};
export default {
    name: "businessFormat",
    data() {
        return {
            width:0,
            formatPath:''
        }
    },
    props: {
        data: {
            type: Object,
            default: () => {}
        }
    },
    watch: {
        data: {
            handler(value) {
                this.handleCarData(value)
            }
        }
    },
    methods: {
        // 处理传入的数据
        handleCarData(value) {
            let res = value
            this.drawCharts('businessFormat', res)
        },
        drawCharts(id, data) {
            const ctx = uni.createCanvasContext(id, this);
            let _this = this
            let phoneInfo = uni.getStorageSync('phoneInfo')
            this.width =  phoneInfo.screenWidth - 32
            uChartsInstance[id] = new uCharts({
                type: "ring",
                context: ctx,
                width: _this.width,
                height: 280,
                series: data.series,
                animation: true,
                rotate: false,
                rotateLock: false,
                background: "#FFFFFF",
                color: ["#1E80FF", "#00C2FF","#6B6FFF","#38C275","#F3BC1B","#ED6B5A","#FF9845","#74839D","#ACB9CD","#CAD0DA"],
                padding: [5, 5, 5, 5],
                dataLabel: true,
                enableScroll: false,
                title: {
                    name: '刚需型',
                    fontSize: 16,
                    color: "#341D00"
                },
                subtitle: {
                    name: "理想业态布局",
                    fontSize: 12,
                    color: "#786B6C",
                },
                legend: {
                    show: true,
                    position: "bottom",
                    lineHeight: 25,
                    float: 'left'

                },
                extra: {
                    ring: {
                        ringWidth: 14,
                        activeOpacity: 0.5,
                        activeRadius: 10,
                        offsetAngle: -45,
                        labelWidth: 15,
                        border: false,
                        borderWidth: 3,
                        borderColor: "#FFFFFF"
                    }
                }
            });
            setTimeout( ()=>{
                this.canvasToTempImage('businessFormat')
            },2000)
        },
        canvasToTempImage(id){
            uni.canvasToTempFilePath({
                canvasId:id,
                complete:(res)=>{
                    if (res.tempFilePath){
                        uni.getFileSystemManager().readFile({
                            filePath: res.tempFilePath,
                            encoding: 'base64',
                            success: res => {
                                let base64 = 'data:image/png;base64,' + res.data;
                                this.formatPath = base64
                            }
                        })
                    }
                }
            },this)
        },
    }
}
</script>

<style scoped lang="scss">
.businessFormat{
    width: 100%;
    .format{
        width: 100%;
        height: 260px;
    }
}
</style>
